This is working for me in php 5.5:<?php$ldap_host = 'ldap://ldap.example.com';$base_dn = "ou=users,dc=example,dc=com";$connect = ldap_connect($ldap_host);$result = ldap_search($connect, $base_dn, "(cn=*)");$entry = ldap_first_entry($connect, $result);do { $dn = ldap_get_dn($connect, $entry); echo "DN is $dn\n";} while ($entry = ldap_next_entry($connect, $entry));ldap_close($connect);?>